Convert Windows 10 from Legacy BIOS to UEFI without Data Loss  

NavyLCDR said:

Should be. Try rebooting in UEFI mode. Then give us a final disk management screenshot.

Here it is :)

The first partition is System Reserved? You don't need that one any more. And you have 1.7 GB of empty space at the end of the drive.

NavyLCDR said:

The first partition is System Reserved? You don't need that one any more. And you have 1.7 GB of empty space at the end of the drive.

So i can just delete the "System Reserved" partition and add the unallocated space to the C: ?
Also I have done the "reagentc /enable" :)

Benned said:

So i can just delete the "System Reserved" partition and add the unallocated space to the C: ?
Also I have done the "reagentc /enable" :)

If you wanted to, yes. You'd have to use Diskgenius to do it. I'm off to bed....it's 4:20 am here Glad you finally got it all sorted out!

NavyLCDR said:

If you wanted to, yes. You'd have to use Diskgenius to do it. I'm off to bed....it's 4:20 am here Glad you finally got it all sorted out!

Thank you for the help and yes go to sleep ��

- - - Updated - - -

So i tired to merge the unallocated space with the C: pratition using AOMEI Partition Assistant, since I the order of the Partitions on the disk was like this:
System Reserved
C:
(Next 2 i don't remember what the order of them was)
MSR
S:
Unallocated space

And this made it that i couldnt just add the unallocated space to the C: partition since there were 2 partitions in between the C: partition and the unallocated space.

Now everything seemed to go well, it went step by step, restarting my pc, moving the S: or the MSR to the end of the disk, after the moving the other to the left it. Than it restarted to start the merge of the C: partition and the unallocated space, that was completed successfully, but after it restarting again, i had my asus BIOS starting "Automatic Repair" and, after restarting another time, it came up with the same thing, following a windows screen saying it cant recover it.
It says that there are logs at E:\windows\system32\logfiles\srt\srttrail.txt and i still can go to my USB flash drive and setup a new windows.

So is there any way to recover my stuff 😟 ?

- - - Updated - - -

When i log in into system recovery it says that there is no recoverypoint

Boot into the USB flash drive. When you get to the first setup screen, press Shift + F10 to open a command prompt. Run
diskpart
sel dis 0
lis par

What is the result?

Dis 1 is the disc ive been working with so i assume you mean that one, and it shows the following (i cant post pictures on this website on mobile sadly enough):
Partition 1 - Primary - 578MB - 1024KB (this is the System Reserved)
Partition 2 - Primary - 476GB - 580MB (this is the C:)
Partition 3 - System - 300MB - 476GB (this is the EFI)
Partition 4 - Reserved - 16MB - 467GB

Benned said:

Dis 1 is the disc ive been working with so i assume you mean that one, and it shows the following (i cant post pictures on this website on mobile sadly enough):
Partition 1 - Primary - 578MB - 1024KB (this is the System Reserved)
Partition 2 - Primary - 476GB - 580MB (this is the C:)
Partition 3 - System - 300MB - 476GB (this is the EFI)
Partition 4 - Reserved - 16MB - 467GB

For comparison, this is how mine looks:

Code:

  Partition ###  Type    
  -------------  --------
  Partition 1    System       EFI
  Partition 2    Reserved
  Partition 3    Primary      C:
  Partition 4    Recovery     Recovery

and

Code:

DISKPART> sel part 2

Partition 2 is now the selected partition.

DISKPART> detail part

Partition 2
Type    : e3c9e316-0b5c-4db8-817d-f92df00215ae
....

partition 2 is Microsoft Reserved Partition - Wikipedia

Also do
diskpart
lis vol

Is your Windows volume still C:?

You will want to build a new EFI system partition. Let's put it at the front where it belongs.

diskpart
sel dis 1
sel par 1
del par override
cre par EFI size=100
for fs=fat32 quick
ass letter=s
cre par MSR size=16
exit
bcdboot C:\Windows /s S: /f UEFI
exit

Reboot

Windows volume is now called E:
I will go through the steps now and ofc replace the C: with E: in what you sent